博文
眼睛欺骗脑？脑欺骗眼睛？前者更恰当
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互联网上有很多展示各种视错觉的网站，但这些网站通常使用的标题是：“眼睛欺骗头脑”。 当我读到李泳先生的博客<<头脑欺骗眼睛吗?>>，一方面我钦佩李先生的逆向思维方式; 另一方面，它也使我产生疑问: 到底是“眼睛欺骗头脑”还是“头脑欺骗眼睛”？
On the Internet there are many sites showing various visual illusions, but the titles or catch phrases such sites usually use is: the eyes are cheating the brain. When I read Dr. Yong Lie's blog “头脑欺骗眼睛？”, on the one hand, it arose my respect for Dr.Lie's manner of reverse thinking; on the other hand, it also spurred me to ponder over whether it is really that “the brain is cheating the eyes” or that “the brain is cheating the eyes”.
After considering the matter for a while, I reached the conclusion that it is more proper to say that“the eyes are cheating the brain” than to say that “the brain is cheating the eyes”. The explanation for my conclusion is as follows.
In the human visual system, the visual information regarding the outside world passes from the eyes to the brain in one direction --- see the attached picture. (Once it reaches the brain -- which includes the thalamus, the cerebral cortex, and some other brain substrates -- the information does go bi-directionally.) Therefore, one can say that the eyes are cheating the brain when the information passing from the eyes to the brain is not 100% faithful about the outside world. On the other hand, as there is no information passing from the brain to the eyes, it does not make any sense to say that the brain is cheating the eyes.
https://m.sciencenet.cn/blog-322380-575351.html
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